Food niche overlap between two sympatric leaf-litter frog species from Central Amazonia

Sabagh, Leandro T.; Mello, Renata da Silva; Rocha, Carlos Frederico Duarte

doi:10.1590/s1984-46702012000100013

Cited by 11 publications

(6 citation statements)

References 6 publications

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“…The number of prey categories consumed by Physalaemus cuvieri and P. atim was similar to that reported for congenerics, ranging from 12-20 prey categories (Araújo et al, 2009;Rodrigues and Santos-Costa, 2014;Oliveira et al, 2015;Farina et al, 2018). We found P. cuvieri individuals to consume fewer prey categories than individuals collected in a remnant of original Cerrado vegetation (shrubby grassland areas) surrounded by wet areas in the municipality of Uberlândia, Minas Gerais state (Araújo et al, 2009).…”

Section: Discussionsupporting

confidence: 82%

Diet and Trophic Niche of Two Sympatric Physalaemus Species in Central Brazil

Gambale

Silva

Oda

2020

South American Journal of Herpetology

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Section: Discussionsupporting

confidence: 82%

Diet and Trophic Niche of Two Sympatric Physalaemus Species in Central Brazil

Gambale

Silva

Oda

2020

South American Journal of Herpetology

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“…High feeding overlap should lead to increased competition for food, as most items are consumed by all individuals (Gordon, 2000). However, prey abundance and changes in habitat use reduce the risk of inter-and intraspecific competition for food (Toft, 1980;Kuzmin, 1995;Cajade et al, 2010;Sabagh et al, 2012), in addition to the fact that some invertebrates (e.g., ants) are abundant in tropical forests (Davidson et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Trophic Ecology ofPhysalaemus ephippifer(Anura, Leptodactylidae) in Eastern Amazonia

Rodrigues

Santos-Costa

2014

Journal of Herpetology

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“…Batista et al 2011, Maragno & Souza 2011, Amazon (e.g. Juncá & Eterovick 2007, Sabagh et al 2012, Caatinga (e.g. Damasceno 2005), and Pampas (e.g.…”

Section: Introductionmentioning

confidence: 99%

Diet of the toad Rhinella icterica (Anura: Bufonidae) from Atlantic Forest Highlands of southeastern Brazil

2012

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Abstract:In this study, we present some information of the regarding throphic niche from the anuran toad Rhinella icterica living in high altitudes above 2000 m a.s.l. from a habitat of the Atlantic Forest Biome -the Altitude Fields in the Itatiaia National Park. We found 150 prey items in toad stomachs, belonging to five prey types, as well as skin remains and some remains of plant material. The index of relative importance indicated that most important prey types were beetles and ants, these last composing 70% of the diet numerically and the trophic niche breadth (B) was 1.81. The relatively low diversity of prey types we recorded in the diet of R. icterica of Itatiaia and numerically dominated by ants suggests some preference for this item. We do not found significant relationship between the toad measurements with the preys' measurements. We concluded that R. icterica toads at the highlands of Itatiaia feeds on arthropods, mainly ants and coleopterans and that the high consumption of preys with relatively small and similar size as ants in the diet prevents an expected relationship among frog body or mouth size and prey volume and size. Resumo: No presente estudo apresentamos informações sobre o nicho trófico de uma espécie de anuro que reside em altitudes elevadas da Mata Atlântica. Descrevemos a dieta do sapo Rhinella icterica em altitudes acima de 2000 m em áreas de Campos de Altitude no Parque Nacional do Itatiaia. Encontramos 150 itens nos estômagos analisados de R. icterica, divididos em apenas cinco categorias de presa, além de vestígios da própria pele do anuro e restos vegetais. O índice de importância relativa indicou que besouros e formigas foram os itens mais importantes sendo que formigas representam 70% dos itens ingeridos. A amplitude de nicho trófico (B) foi de 1,81. O reduzido número de categorias alimentares, bem como o elevado número de formigas na dieta sugere que R. icterica apresente uma preferência por este item. Não encontramos nenhuma relação significativa entre as dimensões do anuro com as dimensões das presas. Concluímos que a população de R. icterica que habita os campos de altitude de Itatiaia alimentam-se de artrópodes, principalmente formigas e besouros. O alto consumo de presas com tamanho relativamente semelhante e pequeno como, por exemplo, formigas, impede uma relação esperada entre o tamanho do corpo do anuro ou o tamanho de sua mandíbula e tamanho e volume de presas. Palavras-chave: Amphibia, hábitos alimentares, campos de altitude, nicho trófico, sapo Cururu. 259Toad's diet of brazilian highlands

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Food niche overlap between two sympatric leaf-litter frog species from Central Amazonia

Cited by 11 publications

References 6 publications

Diet and Trophic Niche of Two Sympatric Physalaemus Species in Central Brazil

Diet and Trophic Niche of Two Sympatric Physalaemus Species in Central Brazil

Trophic Ecology ofPhysalaemus ephippifer(Anura, Leptodactylidae) in Eastern Amazonia

Diet of the toad Rhinella icterica (Anura: Bufonidae) from Atlantic Forest Highlands of southeastern Brazil

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